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Microinjection is a gene transfer technique enabling partial control of plasmid delivery into the nucleus or cytoplasm of cultured animal cells. Here this method was used to establish various recombinant mammalian cell lines. The injection volume was estimated by fluorescence quantification of injected fluorescein isothyocynate (FITC)-dextran. The DNA concentration and injection pressure were then...
Various methods exist to transfect mammalian cells in culture. It is generally accepted that individual methods have to be optimized for each of the cell lines or cell types used. Despitethe use of optimized protocols, significant day-to-day variationsin transfection efficiency regularly occur. We postulate that the`status' of cell populations prior to transfection is involved insuch variability....
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